Take a self-guided tour through one of Colorado's most elevated mining districts.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

Unlike most arches, this geological oddity formed in a volcanic dike.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

A long and winding trail through history led to the current iteration of this mountaintop tower.

A mental health hospital dating back more than 139 years, now features a museum.

Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

Community owned and operated, this property is home to a diverse set of nudists.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

The site of a defunct mill, that once supplied marble for the construction of the Lincoln Memorial.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.

Colorado's only active volcano last erupted around 4,000 years ago.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

There are eight natural springs around town, each with a slightly different taste.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

This enigmatic building features numerous architectural styles.

This nearly abandoned town was once a thriving mining community until a series of fires.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.